.ui-autocomplete {max-height: 400px;overflow-y: scroll;z-index: 1000;}
.ui-autocomplete li{float: none}
.ui-state-hover, .ui-widget-content .ui-state-hover, .ui-widget-header .ui-state-hover, .ui-state-focus, .ui-widget-content .ui-state-focus, .ui-widget-header .ui-state-focus {
      border:none;
    background: #e6e6e6;
    font-weight: normal;
    color: #000;
    margin: 0;
}